Autumn radish to prevent viral diseases

Radish virus disease is one of the main diseases of autumn radish. It can be caused in seedling stage, adult stage and seed collection, and it is mainly caused by seedling stage. The prevention methods are summarized as follows:

1. Select resistant varieties. Generally, the green skin system is more resistant to diseases, and resistant varieties can be selected according to the requirements of the mouthwash and the market. Pesticide disinfectant can be used for soil disinfection before sowing.

2. In the dry year, the sowing period should be appropriately postponed to avoid the sensitive period of high temperature and drought.

3. Intercropping with field crops, avoiding continuous cropping and adjacent crops with cruciferous vegetables, can significantly reduce the disease.

4. Take the sorghum live broadcast, watering the seedling stage and lowering the ground temperature.

5. Properly set the seedlings at night and choose to leave disease-free plants. In the dry year, the seedling period is shortened, the weeding and weeding are carried out in time, and the weak seedlings are removed.

6. In the seedling period, timely control of aphids and yellow strips. You can insert 30 to 35 yellow plates per acre to trap, or cover the radish rows with silver ash, milky white or black film, or use the color film tape to hang in the field. It is also possible to use 2.5% deltamethrin emulsifiable concentrate 3000~3500 times liquid, or 50% anti-Pu Wei WP 2000 times liquid, 10% imidacloprid wettable powder 10-15 grams per acre to spray 45 kg of water.

7. Chemical control: There is currently no ideal therapeutic agent for viral diseases. In the early stage of the disease, it can be sprayed with an agent such as amino oligosaccharide 1000 times solution, virus A wettable powder 500 times solution, 1.5% phytoleptic emulsifiable concentrate 1000 times solution, and 56% azoxystrobin chlorothalonil 1500 times solution. Spray once every 5 to 7 days for 2 to 3 times.

Autumn radish is sown too early, and the seedling stage is high temperature and drought, low watering, high ground temperature, and heavy onset when there is a large amount of winged mites. Continuous or continuous with the cruciferous family, the virus is infected with each other and the disease is serious. Therefore, we must do a good job in disease prevention and control.

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